144388417 has 8 divisors (see below), whose sum is σ = 146907200. Its totient is φ = 141880464.

The previous prime is 144388397. The next prime is 144388423. The reversal of 144388417 is 714883441.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144388417 - 2⁷ = 144388289 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144388417.

It is not an unprimeable number, because it can be changed into a prime (144328417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26959 + ... + 31867.

It is an arithmetic number, because the mean of its divisors is an integer number (18363400).

Almost surely, 2^144388417 is an apocalyptic number.

It is an amenable number.

144388417 is a deficient number, since it is larger than the sum of its proper divisors (2518783).

144388417 is an equidigital number, since it uses as much as digits as its factorization.

144388417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5415.

The product of its digits is 86016, while the sum is 40.

The square root of 144388417 is about 12016.1731428937. The cubic root of 144388417 is about 524.6191245062.

The spelling of 144388417 in words is "one hundred forty-four million, three hundred eighty-eight thousand, four hundred seventeen".